Sunday, 13 July 2014

Prototype Approved

I've reached the stage with the development of the V-16 Brake Van kit where it's time to glue together the first set of castings and see if they all fit as they should.

The bodyshell went together just as I'd intended...

Now for the new innovation (for me) on this kit.

All my resin kits so far have been for open wagons, but this van, of course, requires a roof.

Long experience shows that unsupported styrene is not a good solution because sooner or later it will sag in the middle.

The ideal solution is a roof made from metal sheet, but my conscience tells me it's too cheeky to sell a kit that includes only 5 sides of the box, so I've come up with a compromise.

On my scratch built carriages I install a false ceiling with longitudinal ribs to support the roof skin. For the kit I've come up with something similar but easier to cast.

It is s cast block with the top profile that matches the roof. It is sized to fit inside the bodyshell.

All you have to do to get a perfectly formed, non-sagging, styrene roof is to glue this to a piece of thin styrene sheet, starting along one edge and then when that's set bending it over and gluing down the other side - super glue works best for obvious reasons.

And there we have it - a van with a roof!

Now, there is a downside to this solution, and that is the weight of the roof casting which sits very high in the vehicle.

To avoid it being top-heavy and wobbling excessively it will probably be necessary to add some weight to the floor to compensate.

I've quite satisfied with it, though, and see no reason not to press ahead with a production run for the FR shop.

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About Me

Broadcaster, writer and railway modeller.
Best known for the 009 Festiniog Railway layout 'Dduallt' which I built with my father David in the early 1990's and which is still making appearances on the exhibition circuit.